/* roulang page: index */
:root {
      --bg-deep: #0A1F14;
      --bg-darker: #05120A;
      --neon-green: #00FF88;
      --neon-green-dim: rgba(0,255,136,0.15);
      --amber: #FFB800;
      --text-primary: #F0F5F1;
      --text-secondary: rgba(210, 225, 215, 0.85);
      --text-muted: rgba(160, 180, 165, 0.8);
      --card-bg: rgba(10, 31, 20, 0.7);
      --card-border: rgba(0,255,136,0.15);
      --glass-blur: blur(12px);
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-sm: 10px;
      --shadow-glow: 0 0 30px rgba(0,255,136,0.08);
      --btn-glow: 0 0 20px rgba(0,255,136,0.4);
      --transition: 0.25s ease;
      --max-width: 1280px;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      background: radial-gradient(circle at 30% 10%, #0A1F14 0%, #05120A 90%);
      background-attachment: fixed;
      color: var(--text-primary);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      position: relative;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      top:0; left:0; width:100%; height:100%;
      background-image: repeating-linear-gradient(0deg, rgba(0,255,136,0.03) 0px, rgba(0,255,136,0.03) 1px, transparent 1px, transparent 40px),
                        repeating-linear-gradient(90deg, rgba(0,255,136,0.03) 0px, rgba(0,255,136,0.03) 1px, transparent 1px, transparent 40px);
      pointer-events: none;
      z-index: 0;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
      z-index: 2;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    img {
      max-width: 100%;
      display: block;
    }

    /* 导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(5, 18, 10, 0.75);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(0,255,136,0.1);
      height: 68px;
      display: flex;
      align-items: center;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

    .logo {
      font-weight: 800;
      font-size: 1.7rem;
      letter-spacing: -0.5px;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo i {
      color: var(--neon-green);
      font-size: 1.9rem;
    }
    .logo span {
      color: var(--neon-green);
    }

    .nav-links {
      display: flex;
      gap: 2.2rem;
      align-items: center;
    }
    .nav-links a {
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-secondary);
      padding: 6px 0;
      position: relative;
      transition: color 0.2s;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--neon-green);
      transition: width 0.25s;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: #fff;
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .nav-actions {
      display: flex;
      gap: 12px;
      align-items: center;
    }
    .btn-search {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.2);
      color: #fff;
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: 0.2s;
    }
    .btn-search:hover {
      border-color: var(--neon-green);
      color: var(--neon-green);
    }
    .btn-nav-cta {
      background: var(--neon-green);
      color: #05120A;
      font-weight: 700;
      padding: 10px 22px;
      border-radius: 40px;
      font-size: 0.9rem;
      transition: var(--transition);
      box-shadow: 0 0 12px rgba(0,255,136,0.3);
    }
    .btn-nav-cta:hover {
      background: #00e077;
      box-shadow: 0 0 22px rgba(0,255,136,0.6);
      transform: scale(1.03);
    }

    .hamburger {
      display: none;
      background: none;
      border: none;
      color: #fff;
      font-size: 1.8rem;
      cursor: pointer;
    }

    /* Hero 分屏 */
    .hero {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 2.5rem;
      padding: 2rem 0 4rem;
      flex-wrap: wrap;
      min-height: 85vh;
    }
    .hero-left {
      flex: 1 1 480px;
    }
    .hero-right {
      flex: 1 1 450px;
      display: flex;
      flex-direction: column;
      gap: 1.3rem;
      align-items: center;
    }

    .hero h1 {
      font-size: clamp(2.8rem, 6vw, 4.2rem);
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1.5rem;
      color: #fff;
    }
    .hero h1 span {
      color: var(--neon-green);
    }
    .hero-sub {
      font-size: 1.2rem;
      color: var(--text-secondary);
      margin-bottom: 2.2rem;
      max-width: 550px;
    }
    .btn-primary {
      background: var(--neon-green);
      color: #05120A;
      font-weight: 700;
      padding: 16px 36px;
      border-radius: 50px;
      font-size: 1.1rem;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      border: none;
      cursor: pointer;
      box-shadow: var(--btn-glow);
      transition: var(--transition);
    }
    .btn-primary:hover {
      background: #00e077;
      box-shadow: 0 0 30px rgba(0,255,136,0.7);
      transform: scale(1.04);
    }

    .live-card {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 1.4rem 1.8rem;
      width: 100%;
      max-width: 320px;
      box-shadow: var(--shadow-glow);
    }
    .live-match {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin: 10px 0;
    }
    .team {
      font-weight: 700;
      font-size: 1.2rem;
    }
    .score {
      font-weight: 800;
      font-size: 1.8rem;
      color: var(--neon-green);
      font-variant-numeric: tabular-nums;
      animation: pulse 1.5s infinite;
    }
    .minute {
      color: var(--amber);
      font-weight: 700;
    }

    @keyframes pulse {
      0% { opacity: 0.9; text-shadow: 0 0 5px var(--neon-green); }
      50% { opacity: 1; text-shadow: 0 0 15px var(--neon-green); }
      100% { opacity: 0.9; text-shadow: 0 0 5px var(--neon-green); }
    }

    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      margin-bottom: 2.5rem;
      color: #fff;
      text-align: center;
    }
    .section-title i {
      color: var(--neon-green);
      margin-right: 10px;
    }

    /* 对比卡片 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
      gap: 24px;
      margin: 2rem 0 4rem;
    }
    .compare-card {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      transition: 0.2s;
    }
    .compare-card.bad {
      border-left: 4px solid #ff4d6d;
    }
    .compare-card.good {
      border-left: 4px solid var(--neon-green);
    }
    .compare-card h3 {
      font-size: 1.5rem;
      margin-bottom: 12px;
    }

    /* 解决方案卡片 */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
      gap: 24px;
      margin: 2rem 0;
    }
    .sol-card {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 2rem 1.3rem;
      transition: all 0.25s;
      text-align: center;
    }
    .sol-card:hover {
      border-color: var(--neon-green);
      transform: translateY(-6px);
      box-shadow: 0 20px 30px rgba(0,0,0,0.4);
    }
    .sol-card i {
      font-size: 2.2rem;
      color: var(--neon-green);
      margin-bottom: 1rem;
    }

    .data-strip {
      background: rgba(0,255,136,0.05);
      border-radius: var(--radius-lg);
      padding: 2rem;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-around;
      margin: 3rem 0;
    }
    .stat-item {
      text-align: center;
    }
    .stat-num {
      font-size: 2.7rem;
      font-weight: 800;
      color: var(--neon-green);
    }

    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
      gap: 24px;
    }
    .testimonial {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      border-radius: var(--radius-md);
      padding: 1.8rem;
    }

    .faq-item {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      padding: 1.2rem 1.5rem;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }
    .faq-answer {
      padding: 0 1.5rem 1.2rem;
      color: var(--text-secondary);
    }

    .cta-final {
      background: rgba(0,255,136,0.06);
      border-radius: 32px;
      padding: 4rem 2rem;
      text-align: center;
      margin: 3rem 0;
    }
    .footer {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding: 2.5rem 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      color: var(--text-muted);
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .hero { flex-direction: column; }
      .header { height: auto; padding: 12px 0; }
    }